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Unformatted text preview: MATH230 Spring 2008 Name: [ft Z [0
Quiz 4 Blue Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 30 31 32 33 T 10:00 T 9:00 R 9:00 R 11:00 1. 4 points To unlock a “combination” lock, you must turn the dial to three numbers in sequence, so the word
“combination” is not really the right word to use. A certain lock has 25 numbers on it (1, 2, , 25). If
“combinations” are assigned to locks at random, what is the probability that the ﬁrst number in the
“combination” is even? Assume numbers cannot be repeated. 59SC'FJ9V pass/Alt. Cam’omqb’ms Ms): 19(25, 3) = {3, 800 all (Pm/ya [lyoc/f
A=%+%CMMWMmmMm/”
AM): IZZLIZa : (any LVN/MW /'f €Vﬁﬁ n(4>_ (922.9 Li
PKW‘ nfs) ‘ W" 3 2. 4 points A customer at a fruit stand picks 4 oranges at random from a crate containing 60 oranges, of which 3
are rotten. What is the probability that the customer gets exactly 2 rotten oranges? 3'1 §c7L 07C 0/“ ﬂOSS/‘Joiu $9M/o/CEJ
nC9=>C(¢W/%): Haj/035‘ aliegvﬂgz—bkebz
[3—2— St'i" 9F Sin/Olts W172 2. 077704 Unmaq We «2,2» «97,2; = W AM) 4733
A; =’ 1 :.
Pr( ) n($) 4§33ZZE (009% 3. 2 points Find C(11,7). / COW); 710m)! 2 33“ MATH230 Spring 2008 Name: £6 >5 Z 20
Quiz 4 Green Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 30 31 32 33 T 10:00 T 9:00 R 9:00 R 11:00 1. 4 points A customer at a fruit stand picks 3 oranges at random from a crate containing 60 oranges, of which 4
are rotten. What is the probability that the customer gets exactly 1 rotten orange? 5 2 55* 0F qll pd‘SS/‘b/L 3954/0/63
Ms): dams): $022.0 qH era/lye W“;
A; Scf‘ WC SOM/QLCS VLM i Cir994
mm,); cm”) r C(b'calz.) = (0160
n A) (also WM)“ n(3) $33220 1.!3’00 2. 2points Find C(12,3). I Z ./
Caz/g) : 3.’ ((2%)! 3. 4 points To unlock a “combination” lock, you must turn the dial to three numbers in sequence, so the word
“combination” is not really the right word to use. A certain lock has 25 numbers on it (1, 2, , 25). If
“combinations” are assigned to locks at random, what is the probability that the ﬁrst number in the
“combination” is odd? Assume numbers cannot be repeated. 5: X; A62 qn pquy(b7z Cow, b/MMLIMJ
54(5): PCZS/ 5): l3/ 8’00 or” ezvv//\/~li7‘¢{‘/
,4 :sckov‘ Comb/ME’MS WW [S’MMWM r401
VIM): /3'2L{’Z_3> " 717E) ‘ ZZO MATH230 Spring 2008 Name: [Le x Z / 0
Quiz 4 Canary ' Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. 30 31 32 33 T 10:00 T 9:00 R 9:00 R 11:00 1. 2 points Find C(13,9). 2. 4 points To unlock a “combination” lock, you must turn the dial to three numbers in sequence, so the word
“combination” is not really the right word to use. A certain lock has 30 numbers on it (1, 2, , 30). If
“combinations” are assigned to locks at random, what is the probability that all the numbers in the
“combination” are single digits? Assume numbers cannot be repeated. 5: Sci— J «rH pass/ML CQMlo/Mr/‘J'ms
4(3) = M30, 3) a 27, 360 a u aid/rt,» Mae/7
ﬂ: .SuL MC (mama‘st vwﬂa 67/] 504016 a’xﬁkl:
M4)» P/m) = W1 nA) 5.3.: 
PF“): 575% 3' ZH/Béad ' ’0207 3. 4 points A customer at a fruit stand picks 5 oranges at random from a crate containing 20 oranges, of which 2
are rotten. What is the probability that the customer gets exactly 1 rotten orange? 5: S£7L J or” FVSSI‘b/e amp/c5 “(5): c(zq,>'): 5/307 qll aim/{7, Mai),
xt> sea/mac 99mp(c$ wihﬂ / when vmvc
MA): C(Z,/)'C(t834r)= e120 ; M) s M . '
[Dr/A) MS) {5,577 '3? v7 MATH230 Spring 2008 Name: 4 C I 0
Quiz 4 Pink Discussion Section: 20 21 22 23
Closed book, closed notes. (circle one) T 8:00 T 9:00 R 8:00 R 9:00
SHOW ALL WORK. ' 30 31 32 33 T 10:00 T9200 R9:00 R 11:00 l. 4 points To unlock a “combination” lock, you must tum the dial to three numbers in sequence, so the word
“combination” is not really the right word to use. A certain lock has 30 numbers on it (1, 2, , 30). If
“combinations” are assigned to locks at random, what is the probability that all the numbers in the
“combination” are double digits? Assume numbers cannot be repeated. 5“ 51/” tic 4/! [bras/UL cm bike/‘73“;
n($) 3 P600, 3) = be/ HBO 3! 61H 67V7//7'* /)',Ic¢,/\/
ff’; SCf’a‘F (‘w‘bl‘hqh'mi or” de/L anal)? mm): Mina) = 7W0 VIM) _ 7‘390 “(8) ' 2%, 3G0, : 2. 2points Find C(10,6). /
lO .
C([O,(9)= (0x ’ Z (O r («o—e)! 3. 4 points A customer at a fruit stand picks 4 oranges at random from a crate containing 20 oranges, of which 3
are rotten. What is the probability that the customer gets exactly 2 rotten oranges? Sageraf q“ pass/Mb 97‘Mp(¢3
f
Ms): C(M/H‘) eHiﬁs/ all efwllf~ Mu); A— : ‘Sc'f' cf €994,483 “(M/KM 2, NH—U‘ OVW’C‘jeX
W): C(3/2>~CC'7/Z>  m ...
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This note was uploaded on 04/27/2009 for the course MATH 230 taught by Professor Crissinger during the Spring '08 term at University of Delaware.
 Spring '08
 CRISSINGER

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